Title of article
Failure of a continuous-annealing furnace roller at Mobarakeh Steel Company
Author/Authors
Dini، نويسنده , , Ghasem and Bina، نويسنده , , Mohammad Hosein and Vaghefi، نويسنده , , Sayed Mahmoud Monir and Raeissi، نويسنده , , Keyvan and Safaei-Rad، نويسنده , , Mohammad Ali Navabi، نويسنده , , Morteza، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
7
From page
856
To page
862
Abstract
In this study, a failure analysis of an austenitic G-40CrNiSi25-12 steel furnace roller was performed by using chemical analysis, metallographic examination, Vickers micro-hardness measurements, X-ray diffractometer analysis and investigation of the crack propagation path in failed samples of the roller metal. The examination results revealed that roller fracture was caused by precipitation of the sigma phase during prolonged heating at temperatures exceeding 650 °C, resulting in a detrimental decrease in steel toughness at lower temperatures occurring during shut-down, straightening or heating-up periods.
Keywords
Furnace roller , sigma phase , Toughness , Austenitic steel
Journal title
Engineering Failure Analysis
Serial Year
2008
Journal title
Engineering Failure Analysis
Record number
2338158
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